geological
Showing 81–100 of 100 results
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Geological Specimens
Banded Iron Formation — Specimen Grade
Mohs hardness: 5.5–7$143.95 -
Geological Specimens
Garnet Schist — Display Grade
Mohs hardness: 5.5–7.5$128.87 -
Geological Specimens
Amethyst Cathedral Geode — Half — Polished Face
Mohs hardness: 7$2,522.08 -
Geological Specimens
Pele’s Tears — Hawaiian — Polished Face
Mohs hardness: 5–5.5$39.27 -
Geological Specimens
Celestite Geode — Whole — Display Grade
Mohs hardness: 3–3.5$381.58 -
Geological Specimens
Radiolarite — Display Grade
Mohs hardness: 6.5–7$21.36 -
Geological Specimens
Fulgurite — Desert Glass Tube — Specimen Grade
Mohs hardness: 5.5–6$63.31 -
Geological Specimens
Serpentinite — Large Specimen
Mohs hardness: 3–4$47.93 -
Geological Specimens
Banded Iron Formation — Field Specimen
Mohs hardness: 5.5–7$153.80 -
Geological Specimens
Septarian Nodule — Polished Half — Large Specimen
Mohs hardness: varies$57.77 -
Geological Specimens
Garnet Schist — Large Specimen
Mohs hardness: 5.5–7.5$97.13 -
Geological Specimens
Chalk with Flint Nodule — Display Grade
Mohs hardness: 1–7$50.86 -
Geological Specimens
Obsidian — Mahogany Flow — Field Specimen
Mohs hardness: 5–5.5$69.67 -
Geological Specimens
Serpentinite — Polished Face
Mohs hardness: 3–4$37.31 -
Geological Specimens
Serpentinite — Specimen Grade
Mohs hardness: 3–4$64.71 -
Geological Specimens
Conglomerate — Tillite — Large Specimen
Mohs hardness: varies$48.51 -
Geological Specimens
Desert Varnish Sandstone — Specimen Grade
Mohs hardness: 7$43.76 -
Geological Specimens
Radiolarite — Specimen Grade
Mohs hardness: 6.5–7$43.96 -
Geological Specimens
Radiolarite — Polished Face
Mohs hardness: 6.5–7$40.53 -
Geological Specimens
Desert Varnish Sandstone
Mohs hardness: 7$52.07